JOSE CALVO / SCIENCE PHOTO LIBRARY JOSE CALVO / SCIENCE PHOTO LIBRARY
Coloured transmission electron micrograph (TEM) of a section through a cerebellar glomerulus. Across centre is a mossy fiber (purple), one of the inputs to the cerebellum. Within it are synaptic vesicles and mitochondria (khaki). It is surrounded by many granule cell dendrites (green) and, outwardly, axon terminals of Golgi II neurons (pink). The synaptic contacts are labelled in red.
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